Everlast® punching bagFeatures metal rivets for security along with a center aligned sandbag placement system for maximized force dispersion and hand safety. Double end loop provides increased heavy bag functionality. Specially blended filler mix of sanitized synthetic and natural fibers provide resilient shock absorbency. Premium synthetic leather with reinforced webbing along with superior heavy bag construction increases durability and functionality; heavy duty nylon straps provide security and safety. Not recommended for outside use.